Analytic solution for quasi-Lambertian radiation transfer

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

An analytic solution is derived for radiation transfer between flat quasi-Lambertian surfaces of arbitrary orientation, i.e., surfaces that radiate in a Lambertian fashion but within a numerical aperture smaller than unity. These formulas obviate the need for ray trace simulations and provide exact, physically transparent results. Illustrative examples that capture the salient features of the flux maps and the efficiency of flux transfer are presented for a few configurations of practical interest. There is also a fundamental reciprocity relation for quasi-Lambertian exchange, akin to the reciprocity theorem for fully Lambertian surfaces. Applications include optical fiber coupling, fiber-optic biomedical procedures, and solar concentrators.

Original languageEnglish
Pages (from-to)817-822
Number of pages6
JournalApplied Optics
Volume49
Issue number5
DOIs
StatePublished - 10 Feb 2010

Fingerprint

Dive into the research topics of 'Analytic solution for quasi-Lambertian radiation transfer'. Together they form a unique fingerprint.

Cite this